Automatic electric time switch



March 1 1927.

D. ZORGO AUTOMATIC ELECTRIC TIME SWITCH Filed May 13, 1926 2Sheets-Sheet 1 IN VEN T OR Desicler zor jo WON/E? March 1 1927.1,519,777

Filed May 13, 1926 2 Sheets-Sheet 2 a J INVENTOR Si Deszder Z0!" 0 5:iii.

. Y 1 E WORNEY,

Patented Mar. 1, 1927.

UNIT STATES DESIIDER ZORGO, OF MONTREAL, QUEBEC,

CAN-ADA, ASSIGNOR 01E FOUR-TENTHS T MIKLOS SZ'AKACS, GF BROOKLYN, NEWYORK.

AUTOMATIC ELECTRIC TIME SWITCH Application filed May 13, 1926-. SerialNo. 108,789.

This invention relates generally to time switches, and has moreparticular reference to a novel type of twenty-four hour variable 1adjustable switch adapted to control building lights, etc.

The invention has for an object the provision: of an improved timeswitch which will be adapted for adjustments in six-hour sectors, or anyother desirable divisions. 16y adjustments in six-hour Sectors is meant,that the device is adapted to close an electrical circuit from thestarting of a sixhour sector to any desired time within the six hours,thereafter opening the circuit for the balance of the six hours, and soon for any six-hour sector. Of course, the principle may be extended toany other time sec tor, such as for example a. four-hour sector.

For further comprehension: of the invention, and. of the objects andadvantagesthereof, reference will be had to the following descriptionand accompanying drawings, and to the appended claims in which thevarious novel features of the invention are more particularly set forth.

Referring to the drawings forming a. ma terial part of this disclosureFig. 1 is afront perspective view of a de vice constructed. according tothis invention.

Fig. 2, isa sectional rear view of the device taken just in front of therear cover.

Fig. 8 is a vertical sectional view, taken on the line 3-3 of Fig. 2.

Fig. 4 is a fragmentary sectional view taken on the line H of Fig. 2.

Fig. 5 is a fragmentary detail view of the front stationary dial.

Fig- 6 is a fragmentary, partly sectional view of the clutch mechanismfor adjusting the position of the front rotating dial.

Fig. is a detail sectional view of the sub stantially central stationarybrush.

Fig. 8 is a detail sectional view of one of the adjustable brushesmounted on the front rotating dial.

Fig. 9 is a detail front view of. the stationary cam element positionedbehind the front rotating dial, and upon which the adjustable brushes ofthe front rotating dial glide thereover.

Fig.10 is a horizontal sectional viewtaken on the line 1010 of Fig. 9.

The reference numeral 10 generally indi cates the casing havingdepending flanges 11 formed with apertures 12 for fastening the deviceto: a suitable support. The screws 13 clamp the rear wall of casing 10,the rear plate 14 of a frame formed with a front plate 15 joined to saidrear plate 1e by the spacing rods 16, held by screws 17. Mounted on thefront face of front plate 15 is the insulation plate 18, and secured to.the front face of the insulation plate is the time-sector ca-m element19 formed with a vertically disposed beveled portion 19 at the centralupper point, and from the lower extremity of the beveled portion leads acam edge 19 to the horizontal center line 19 thereafter joining the edgeof a circular aperture 19. Closing the front of the casing 10 is astationary insulation material front face 20 formed with a circular dialwith divisions graduated into 245 hours, with the ordinals of the scalerunning counter-clockwise.

A shaft journaled in the rear and front plates 14, and 15 is providedwith a positioning collar 26 fixed thereto, and with a clutch facecollar 27 also fixed thereto, and finally with an end member 28. Aninsulation material knob 29 is rotatable on member 28, and rigidlyattached to knob 29' is. a clutch face member 30, rigidly supporting theconductive dial member 31 and the front insulation material dial 32,both dial members being formed with elongated slots 33, preferably fourin number, and equally spaced so as to represent six-hour sectors. Onthe' front dial 32, adjacent each elongated slot is a scale graduatedinto six hour divisions, such that zero on the scale aligns just beneaththe very bottom of the cam portion 19 and six on the scale aligns withthe top of the cam portion 19, the cam element 19* being such that theintermediate graduations correspond to the length of time neccssary foratheoretical point: to travel along the arc of a circle from the edge 19to reach a point on edge 19" when the theoretical point is traveling atthe rate of one revolution per 24 hours. The Spring 34: normally acts tokeep the clutch faces of 27 and 30 engaged.

Slidable in each of the slots 33, is a carbon brush 35 projecting from acasing 36, engaged by a casing head 37, provided with an insulation knob38, and a pointer 39. The spring normally urges the carbon brush 35outwards against the cam 19 or the insulation 18.

Fastened to the members 15, and 18 is another brush 41 in a casing 42,having a cover 43, an interior spring 44, and a terminal connection 45.

A clock mechanism is mounted within the frames 14,- and and is adaptedto revolve the shaft once every 24 hours. Projecting from the side ofthe casin 10 is the winding handle 46 connected to a bevel gear 47,engaging another bevel gear 48 on a shaft 49 connected in the customaryway, to a customarily operated clock-spring housed in casing 50,provided with a rear gear 51, and connected by a train of gears to theshaft 25. Another train of gears mesh in with the first. train, and thelast gear 52 of the Second train is on a shaft 53 provided with agovernor device characterized by weighted springs 54, connected withwheel 55 damped by pin 56 on the end of a lever 57 pivotally mounted onbracket 58, and urged from damping position by spring 59, against thedamping action of rod 60 abutting said lever 57, and mounted threadedlyengaging bracket 61, while slidable 1n bracket 62, the end of said rod60 being provided with an operating knob 63.

Mounted on the top of casing 10 is an electrical socket 64, having alead to terminal 45, and the second lead 66 to the cam 19.

The operation of the device consists in the closing of the circuitbetween leads 65, and 66 during certain hours. The clock mechanism,first of all, is set going, which results in the revolving of the dials31, and 32 at the rate of once every 24 hours, revolving clockwise. Dueto the clutch faces between members 27, and 30, the dials 31, and 32,may be turned clockwise without effecting the shaft 25, allowingsuitable setting. Each of the brushes 35 are set as desired along theslots 33 indicated by the pointers 39, against the adjacent scale. Forexample assume the settings shown in Fig.

1. The upper pointer 39 is setto 5 on the scale, the dials 31, and 32being rotated by the clock mechanism as stated, and the specific brush35 just riding up on the bevel 19 of the cam 19, the electrical circuitbeing closed from lead 65 to terminal 45, brush 41, dial 31, brush 35,cam 19, and finally lead 66. After five'hours the brush 35 rides off ofthe cam face 19", opening the electrical'circuit, and in another hourthe brush 35 of the pointer which was on the left hand side of Fig. '1,reaches the top ready to ride onto the bevel 19 of the cam 19, butassuming this pointer tobe at zero on the scale, the brush 35 will justbeout of reach of the very bottom of the bevel 19, therefore for sixadditional hours the circuit will re main open. After this time haspassed the pointer Whichwas originally on the bottom side, shown in Fig.1, reaches the top ready to ride'onto the bevel 19 of the cam 19, but

19 and assuming the pointer to be set at 3 4, the electrical circuitwill be closed, and will remain closed for 3 4 hours, until the brush 35rides off of cam edge 19*.

If all the pointers were placed on six on the scales, the circuit wouldalways be closed, and should the pointer be placed on zero the circuitwould always be opened.

Vhile I have illustrated and described my invention with some degree ofparticularity, I realize that in practice various alterations thereinmay be made. I therefore reserve the right and privilege of changing theform of the details of construction or otherwise altering thearrangement of the correlated parts without departing from the spirit orthe scope of the appended claims.

Having thus described my invention, what I claim as new, and desire tosecure by United States Letters Patent is:

1. In a time switch, a time rotated dial formed of an insulated frontmember, and a conductive rear member, both members being provided withcertain radial elongated slots, a time scale adjacent said slots,brushes slidable in said slots, and provided with pointers to saidadjacent scale, a time sector cam element, provided with a rearinsulation member, stationarily moimted behind said dial, said brushesengageable against said cam or against said insulation member, said cambeing formed with a beveled vertis cally disposed portion to allow saidbrushes to. ride from said rear insulation member onto said cam, thelower extremity of said beveled portion leading into a cam edge, and astationary brush depending from said rear insulation member, and bearingagainst said conductive rear member of said dial.

2. In a time switch, a time rotated dial formed of an insulated frontmember, and

a conductive rear member, both members being provided with certainradial elongated slots, a time scale ad acentsald slots, brushesslidable in said slots, and provided with pointers to said adjacentscale, a time sector cam element, provided w th a rear insulationmember, stationarily mounted behind said dial, said brushes engageableagainst said cam or against said insulation member,

said cam being formed with a'beveled vertically disposed portion toallow said brushes to ride from said rear lnsulatlon member onto saidcam, the lower extremity of said beveled portion leading into a camedge, and a stationary brush depending from said rear insulation member,and bearing against said conductive rear member of said dial, whereby anelectrical circuit exists between said latter mentioned brush, the rearof said dial, and the slidable brushes on said dial.

3. In a time switch, a time rotated dial formed of an insulated frontmember, and a conductive rear member, both members being provided withcertain radial elongated slots, a time scale adjacent said slots,brushes slidable in said slots, and provided with pointers to saidadjacent scale, a time sector cam element, provided with a rearinsulation member, stationarily mounted behind said dial, said brushesengageable against said cam or against said insulation member, said cambeing formed with a beveled vertically disposed portion to allow saidbrushes to ride from said rear insulation member onto said cam, thelower extremity of said beveled portion leading into a cam edge, and astationary brush depending from said rear insulation member, and bearingagainst said conductive rear member of said dial, whereby an electricalcircuit exist-s between said latter mentioned brush, the rear of saiddial, and the slidable brushes on said dial, the circuit including thetime sector cam only when said cam is engaged by one of said brushes.

4. In a time switch, a time rotated dial formed of an insulated frontmember, and a conductive rear member, both members being provided withcertain radial elongated slots, a time scale adjacent said slots, and atime scale depending from a stationary member adjacent the circumferenceof said dial, brushes slidable in said slots, and provided with pointersto said adjacent scale, a time sector cam element, provided with a rearinsulation member, stationarily mounted behind said dial, said brushesengageable against said cam or against said insulation member, said cambeing formed with a beveled vertically disposed portion to allow saidbrushes to ride from said rear insulation member onto said cam, thelower extremity of said beveled portion leading into a cam edge, and astationary brush depending from said rear insulation member, and bearingagainst said conductive rear member of said dial.

5. In a time switch, a time rotated dial formed of an insulated frontmember, and a conductive rear member, both members being provided withcertain radial elongated slots, a time scale adjacent said slots,brushes slidable in said slots, and provided with pointers to saidadjacent scale, a time sector cam element, provided with a rearinsulation member, both being stationarily mounted behind said dial,said brushes engageable against said cam or against said insulationmember, depending upon the position of said brushes in said slots, saidcam being formed with a beveled vertically disposed portion to allowsaid brushes to ride from said insulation member onto said cam, thelower extremity of said beveled portion leading into a cam edge, and astationary brush depending from said rear insulation member, and bearingagainst said conductive rear member of said dial.

6. In a time switch, a time rotated dial formed of an insulated frontmember, and a conductive rear member, both members being provided withcertain radial elongated slots, a time scale adjacent said slots,brushes slidable in said slots, and provided with pointers to saidadjacent scale, a time sector cam element, provided with a rearinsulation member, stationarily mounted behind said dial, said brushesengageable against said cam or against said insulation member, said cambeing formed with a beveled portion to allow said brushes to ride fromsaid rear insulation member onto said cam, the lower extremity of saidbeveled portion leading into a cam edge, and a stationary brushdepending from said rear insulation member, and bearing against saidconductive rear member of said dial.

7 In a time switch, a time rotated clutch connected dial formed of aninsulated front member, and a conductive rear member, both members beingprovided with certain radial elongated slots, a time scale adjacent saidslots, brushes slidable in said slots, and pro vided with pointers tosaid adjacent scale, a time sector cam element, provided with a rearinsulation member, stationarily mounted behind said dial, said brushesengageable against said cam or against said insulation member, said cambeing formed with a. beveled vertically disposed portion to allow saidbrushes to ride from said rear insulation member onto said cam, thelower extremity of said beveled portion leading into a cam edge, and astationary brush depending from said rear insulation member, and bearingagainst said conductive rear member of said dial.

8. In a device of the class described, a time-sector cam element,comprising a main body, an inner vertically disposed beveled portion, acam edge starting at the bottom of said beveled portion, and a circularedge, joining the end of said cam edge to the top of said beveledportion, said circular edge being concentric to the said main body.

In testimony whereof I have affixed my signature.

DESIDER ZORGO.

